BALANCE SHEETS (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
CURRENT ASSETS
Accounts receivable, less reserve of $1.6 and $1.9, respectively	$ 188.8	$ 179.4
Accrued unbilled revenues	55.5	58.7
Advances to parent	215.6	0
Fuel inventories	58.5	74.4
Materials and supplies, at average cost	77.9	79.4
Deferred income taxes	170.8	189.2
Fuel clause under recoveries	68.3	26.2
Other	34.5	31.9
Total current assets	869.9	639.2
OTHER PROPERTY AND INVESTMENTS	2.9	2.6
PROPERTY, PLANT AND EQUIPMENT
In service	9,835.6	9,036.4
Construction work in progress	111.6	462.8
Total property, plant and equipment	9,947.2	9,499.2
Less accumulated depreciation	3,005.7	2,864.6
Net property, plant and equipment	6,941.5	6,634.6
DEFERRED CHARGES AND OTHER ASSETS
Regulatory assets	411.5	379.1
Other	40.4	39.4
Total deferred charges and other assets	451.9	418.5
TOTAL ASSETS	8,266.2	7,694.9
CURRENT LIABILITIES
Accounts payable - affiliates	0.3	1.8
Accounts payable - other	163.0	237.2
Advances from parent	0	87.2
Customer deposits	73.7	70.9
Accrued taxes	38.8	38.0
Accrued interest	42.9	42.8
Accrued compensation	22.6	30.0
Other	51.6	47.2
Total current liabilities	392.9	555.1
LONG-TERM DEBT	2,655.3	2,300.2
DEFERRED CREDITS AND OTHER LIABILITIES
Accrued benefit obligations	178.3	149.0
Deferred income taxes	1,686.6	1,545.2
Regulatory liabilities	263.0	234.2
Other	85.9	81.9
Total deferred credits and other liabilities	2,213.8	2,010.3
Total liabilities	5,262.0	4,865.6
COMMITMENTS AND CONTINGENCIES (NOTE 12)
STOCKHOLDER'S EQUITY
Common stockholder's equity	1,019.2	1,016.3
Retained earnings	1,985.0	1,813.0
Total stockholder's equity	3,004.2	2,829.3
TOTAL LIABILITIES AND STOCKHOLDER'S EQUITY	$ 8,266.2	$ 7,694.9